Depraved (1967)

Three New York swingers couples Bob and Polly Rod and Linda Vera and Mark experiment with drugs swapping mates and homosexuality Vera is a bisexual who learns that shes pregnant but does not know who the father is and finds solace with a lesbian friend Linda cheats on Rod with his brotherinlaw while Polly is a lesbian in denial whom attends transvestite parties to escape from being around her misogynistic husband Bob